How long does it take for the vertical fire channel temperature to be most stable after exchange (on the non-burning side)?
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How long does it take for the vertical fire channel temperature to be most stable after exchange (on the non-burning side)?
The temperature of the vertical fire channel is generally the most stable 5 minutes after the exchange.
5 minutes is the most stable. I would like to ask when did you start measuring the temperature after the changeover?
We generally complete the test in 12 minutes with 14 rows in 10 minutes.
The several furnace types I have experienced all start measuring 10 minutes after the change. According to the book, it should be converted to the temperature 20 seconds after the change, so that you can know the true temperature of the coke oven. But I think as long as you insist on measuring the temperature 10 minutes after the change, there should be no big problem. Finally, does anyone know what the conversion method is for 20 seconds?
It should start at 5 minutes. When I used an inclined meter to measure the suction power of the roof, I observed that the suction power did not change much after 5 minutes.
Colleagues on the sixth floor, don’t we have rules?
Generally, the temperature measurement starts 5 minutes after the changeover, and one furnace group is measured within two changes. As for the vertical fire channel temperature 20 seconds after the changeover, the compensation temperature needs to be measured in advance, and then the compensation temperature is added to the straight-line temperature measured each time.
In terms of stability, the longer the time after commutation, the smaller the temperature change. For a 30-minute commutation interval, the temperature changes between 50 and 60°C. The temperature change within 5 minutes after commutation is more than 40%, and the temperature change trend becomes smaller and smaller after that.
It is generally believed that 5 minutes is said in this way, including in books. But according to actual operation, 10 minutes is generally the most stable. (Personal actual operation believes that if there are different opinions, we can exchange them)
Yes, temperature measurement will start five minutes after the changeover.
Generally, it takes 5-10 minutes after changing
The temperature will stabilize after five minutes, because the temperature drops faster in the first few minutes. It would be better if the temperature is measured after ten minutes, but sometimes due to work needs (the workload may be relatively large) the temperature can only be measured after five minutes!
All are unstable. The temperature can be measured 5 or 10 minutes after the coke oven is exchanged. Just add the cooling temperature correction value.